Painting machine



oct. zo, 1925.

L. BROWN, JR

PAINTING MACHINE 5 Sheets-Sheet 1.

Filed Dec. 2l. 1922 .EME E k .EME

LeVanae/-Braf//ZJL fm l Oa. 72o, 1925.

L. BROWN, JR

PAINTING MACHINE Filed nec. 21. 1922 5 sheets-sheet 2 f f, a n/ n Wm. f.Y 0 f l E] t d# W M n Oct. 20, 1925.

PAINTING MACHINE L. BROWN,

Filed Dec. 21. 19,22 SYSheets-Sheet 3 verande/- Efon/ Filed' Dec. 21.1922 5 sheets-sheet 4 r. Wm J f mm m r Bm /Ha f w M m `a.. y@ com momOct. 20,1925 1,557,975 l.. BROWN, JR

PAINTING MACHINE yFig-'1a. Fig-E.

LeVandef-Brofm/ ff .l

- Patentedlct.l 20, 1925.`

UNITED ls'rsrEs Y ,1,551,915 PATEN'r oFFlfcE.

- LEVANDEB BROWN, JR., 0F MONTREAL, QUEBEC, CANADA.

PAINTING IMACIElIiIIll.

Application med December 21, 1922. Serial' No. 808,383. q

T o all lwhom it may eo'lwm Be it known that I, LEVANDER BROWN, J r'.,mechanical, supervisor, of the city of, Montreal, Province of Quebec,I)ominion of Canada, have invented certain new and useful Improvementsin Painting Machlnes; and I do hereby declare that the following is afull, clear, and exact description thereof.

My invention relates particularly to pamting machines of the type 1nwhlch boards, planks, scantlings, posts, studs andthe l1ke and otherthings requiring painting are passed through a yreceptacle or chambercontaining the liquid paint and durlng .the process the articles aredipped 1n the paint. There hasl been considerable waste of paint andtime incident to these methods of painting and the paint has not beenuniformly applied and my inventlon has for lts ob]ec1I to overcome thesedisadvantages.

To this end my invention may be said broadly to consist in subjectingboards, planks, scantlings, and the like and 1n fact any article'it maybe desired to give a complete or partial coat of paint, to a fine spraof paint in a machine consisting o f atan ,for containing the liquidpaint in its lower A portion and a series of pipes having their lowerends submerged in the paint and their upper ends in the form of nozzleslocated comparatively close to the article to be .painted as it issupported in the chamber withinthe' tank above the body of liquid paint.Compressed air nozzles with roper pipe connections are supported preerably at .right angles to the paint nozzles and with the paint nozzlesso directed that the flow of' compressed air across the mouth `of thepaint nozzles will spray the paint in atomized 'form over the article ora portion of it according to the angular positions of the atomizers. Inthe-preferred embodiment of the invention the tank is mounted on` atruck in the form of a lfour wheeled buggy, the tank being closed on allsides and the top while openings'in its opposite ends are provided forthe introduction of the boards, etc., at one end and their discharge atthe opposite end. Paint atomzers are located in position to spray thetop, sides and -bottom of the boards, etc., as they pass through thetank. I have provided, as will be presently shown, a particulararrangement of piping to feed the atomizers. This arrangement of ipingmay be varied, and the pipes may be xed or movable. The paintisfagitated to prevent settling, preferabl by compressed air. As acompression o 4air will be developed within the tank and consequentl atendenc given to the atomized paint ito ow outwar ly .through the feedand discharge openings for the boards, etc'., an exhaust 1s providedwhich consists preferably of a duct 1n the form of a relatively largebore pi e communicatingv with the upper end of t e atomizing chamberwithin the upper portion of the tank, such exhaust pipe standing abovethe tank and having a condenser or separator at` its upper end by whichthe paint particles are separated from the air flowing therethrough tothe atmosphere, the paint thus separated bein returned to the tank.'The-exhaust is ac ce erated by a jet of compressed air direct into theduct and projecting in the direction of the condenser or separator. y Ialso provide for the separation of the surplus paint in the atmosphereof the chamber above the sprays, this being efected by flat inclinedsurfaces upon which the paint ispreci itated and which conduct ihe paintthus co lected away from the articles being painted and return it to thebody of paint 1n the bottom of the tank. The suction pipes by which thepaint is drawn to the atomizers have strainers on their bottom ends toprevent lthickened paint or foreignsubstances from obstructing thepipes.

`One of the particular features of this invention is the condenser orseparator by which particles of paint are separated from the airexhausted from the atomizing chamber. This condenser or separator isadapted to present inclined bailiing faces to the atomized paint as itleaves the duct to reclaim the surplus paint, these faces coacting insuch a manner`that the draft without being retarded is caused to followa tortuous path as it leaves the duct and in doing so recipitating thepaint particles on these aces. In the loutward iow it. passes through aperforated screen and is again deflected by other faces. and made toreturn through the perforated screen in the reverse direction andis'finally deflected upwardly and out of the condenser or separator.This causes further precipitation with each change of direction with theresult that the minimum amount of paint passes to the atmosphere whilethe reclaimed paint is conlducted back to the tank. Valves'for regutheyare passed Ithrough the machine and they mechanicaleed also formfeatures of my Figure Fi re 2 isa `longitudinal vertical sectiona viewtaken on l1ne 2-2 Figure 1;

i Figure 3 is a rear elevation of the buggy;

chine;

' Figure 4 is a detail elevation of the feed mechanism for introducingthe articles to be painted; 'I

Figure 5 is a transverse sectional view taken on line 5-5 Figure 2;

Figure 6 is a .front elevation of the ma- Figure 7 is a detail plan viewof the paint separator for the exhaust duct;

Figure 8 is a side elevation of the machine illustrating particularlythe arrangement for iping and system of y'valves for controllmg the airsupply, regulating the atomizers and controlling the agitator; v Figures9 and 10 are side elevation and plan view respectively of one of theatomlzers' Figures '11 and 12 are detail illustrations of the nozzlecommon to all the atomizers; l Figures 13 and 14 are detail views of oneof the strainers for the paint suction pipes;

Figu e 15 is a 'detail perspective view of the int'rior of the separatorand illustrating particularly the faces for deiecting the atomized paintandcollecting the precipitated paint particles;

Figure 16 is a transverse vertical sectional @view of thev separatortaken on line 16-16 @"3 liu-iside ofthe box with the bottom removed for'fthe Figure 17; v

Figure 17 is a detail plan of the underpurpose of better illustration ofthe partlcular arrangement of the baille devices; and

one' of thealing devices removed and shown in elevation from the centerof the box, side elevation and inside p an view res ectively.

the vention i ustrated in the drawings the tank is replresented as awooden box-like structure aving sides 20, 21, ends 22 and 23, a bottom24 presenting forwardly extending center sill 124 and top 25, the sidesbeing reinforced by bars 26. The rear and front ends of the box 22 and23reshpectively have openi s 28 and 27 respectively for the entry ofards, etc. and egress thereof, these openings being covered on theoutside Figures 18%19 and 20 -are detail views of referred embodiment ofmy in-` provide access-to elbow 38'to project at right angles to eachother.v These lnozzles andthe complete atomizer 'formed thereby areshown in detail nFigures 1, 2, 5 and 9. vThe air nozzles of theatomizers are connected to a main compressed air supply pipe 46 by pipes40, 41 and 42 through valve controlled branches 47, 48 and 49, the airconnection from any available source of com ressed air is indicatedat 43and the end o this main pipe 46 has a blow0lf cock 44. The oil or paintnozzles have feed pipes 45 each having strainers covering its lower endand consisting preferably of a brass wire screen 50 with perforated tintop and bottom ends 51 and 52 respectively. These strainers areillustrated in detail in Figures 13 and 14.

The vlower ends of these oil pipes are 1ocated a short distance abovethe bottom of the tank. An agitator located on the bottom of the tankconsists Qf a jet frame consisting of a feed pipe 55, a longitudinalhorizontal pipe 56 coupled thereto and having four transverse branchpipes`57, these pipes 57 having perforations in their sides throughwhich jets of compressed air are rojected horizontally into the liquidpaint i AThe exhaust duct consists of a stand lpipe 70 of relativelylarge bor'e carrying the paint separator. It is connected by branches 71lto suction ducts 72 carried by the side 21 of the tank near the topthereof and communicatin with the chamber in the. tankl above the bodyof paint. The lower end of this stand pipe has a reclaimed paint pipe`75 connected thereto and communicating at its lower end withahorizontal pipe 76 entering the tank above the paint body andcommunicating in turn with a pipe 77 extending downwardly in the paintbody. This-pipe 76, for convenience, is extended inwardly beyond pipe 77to present a support 78 for the boards', etc. as they lare fed lthroughthe machine. This will be presently further alluded to. The paint con- Idensen' or separator carried b the top of the by` a-pi union to thebottom of the con-pA denser x preferably at one corner and Stand-pipeconsists preferab y 'of a rectanis als a paint.- rainage 'pipe 82connected communicating at itsvlower end, by bow 83 with a T-cou ling84; by which co'mmunicationis also e ected between the pipes 75 and 76.vThe box. referablyj consists of galvanized iron vand as its ytop edge1nv wardly bevelled to shed water` as at 87 forming the edge of anopening 88 closed by a cover 89 having a counterweight in the.

form of a balanced nut 9 0'on astern 91 so arranged and balanced thatthe pressure of the outwardlowing air 'will raise the cover and rmit ofthe exhaust. The opening 85 in t e bottom of the condensing box andcommunicating with the stand pipe 70 is surrounded by a rectangularenclosure 86 of perforated plate or wire netting extending from thebottom' to within a short distance of the mouth of the box, and theopening 85 has extendin above it a series of bailling devices in the ormof inclined vanes presented byangular imperforate plates 100. Theseplates are cut to presentwhen folded a rectangle triangle with theirlongest ed es or bases 101 soldered or otherwise rigi ly secured to thesidev of the perforated rec-V tangular enclosure 86 thus presentingapices 102 making contact with the sides of the ehclosure at a levellocated about one-third distance from the top of the enclosure while theapices of the right angles being located midway of the height of these'devices disposes the ridges 103 in planes of'45 degrees to the sides ofthe enclosure. The edges 104 of the several devices are solderedtogether. The structure thus produced is of star form in plan view andasit extends completely over the mouth 85 of the uptake 70, the draft,induced in a manner to be presently alluded to, will meet the point 105and be divided and deflected. upwardly and outwardly as will be resentlyshown. A

The raft is induced by a jet of compressed air directed up the pipe 70by a nozzle 110- on theend of a pipe 112 controlled by a valve 113.through which the acceleration of the draft up the pipe-,70 isregulated. The air pipe 112 extends through the side ofthe tank andthrough asplug 114 in a T-coupling 115 coupled to' one .end of the pipe78, the other end of which is coupled to a T-coupling 116 connectingthis pipe 78 and the pipe 76 and 77 together, tle pipe 112 continuingthrough the coupling 115, pipe 78, coupling 11.6,

pipe 76, T-coupling 84 and upwardly ;in the pipe 70. The verticalopening in coupling 115 is plugged as at 117.

'- The T-coupling 115 is emplo ed for com I venience in construction,this tting being ordinarily carried in stock and readily available whileas it conforms to thecoupling'116 it lends uniformity to the design ofthe machines and at the same timethe flanges 119 and 120 serve as guidesforthe boards, etc. supported by the pipe 78 while being fed through.the machine. 'In o rder to prevent dripping of paint from. the roof ofthe atomizing chamber onto the boards, etc.- being passed through" thcmachine a galvanized iron plate bentto present surfaces 125 inclineddownwardly throughout the full length of the chamber is attached to thevundersidexfof the cover 'of the machine, the side of this plateadjacent tothe cover hinges is extended and inclined downwardly as at126 to deflect the paint i drippings into the tank when the cover israised.

ed "boards, etc. before they pass through the horizontal plane of thesill of the entering `and discharge openings 28 and 27.v This platformis presented by the top 131 of a tool box 132, the top sheet ofgalvanized iron and the sidesl of the box being extended as at 133 tosupport the platform while a hinged door 134 permits of access to thetool box. Guides are secured on the platform to direct the boards. Thistool box is supported'on the side sills. The boards, etc. are fedmechani-. cally into the machine by a pair of rubber rollers- 150 and151, the roller 150 being driven by shaft 152 which in turn is driven byan air turbine 152. The latter is supplied with air through a pipe .152Bwhich is connected to ipe 61 as indlcated in Figure 8. A pair ofp gears153 and 154 carried by this shaft and a shaft 155 of-roller 151 transnmit rotation from sli-aft 152 to shaft 155.

The surface of the supporting` roller 150 is 166 to the tank. The s aft155 is rotatably nded in bearings 156` and the louer of suspension rods157 are adjustably supported by nuts 1 58 resting on the horizontalflange 159. This feed roll 151 is variable as to its feed position toaccommodate different thicknesses of boards, etc. and

SUS

en S

in order `to allow ,of this the suspension rods To facilitate thehandling of the unpaint-4 being covered by a' 157 are provided withencircling springs 170 supported by nuts 171 and bearing between I themand the underside of flange 159. These springs 170 give pressure to theup erl feed roll. A clean-out pipe 200 provided) with a valve isconnected through the bottom of l eed the boards direct y from thelatter to of the present invention.

the former and it is to be distinctly understood that the 'same comeswithin t e scope Operatz'mt.

zles of the atomizers being first adjusted to direct sprays of atomizedpaint against the surfaces of the boards, etc. as they pass through thebox. The adjustment of `the nozzles of each atomizer relatively to eachother and in relation to the thicknesses' and widths of the boards, etc.is effected by turning the nozzle pipe arms at the various joints whichenables the nozzles to be directed where desired. The boards are fedinto the tank through opening 28 by the feed rollers to which they arefed by hand. As they are projected through the machine they aresupported by the piatform,the bottom roller of the feed deviceand`onpipe 78 and`guided by the flanges 119 and 120 and issue through opening`27 from which the are removed and dlsposed for drying. s the boards,etc. pass through the machine the spray from -atomizers 30 and 31completely coat the top surface while the'atomizers 32 and 33 coat theside surface and the atomizers 34 and 35 the bottom surfaces. The valve113 is first opened which causes a draft from the tank to be inducedinto exhaust duct 7 0, the agitator valve 62 is then opened thusstirring up the paint in the tank. The valves of the atomizers are thenopened and the machine commences operation. As the boards pass throughthe machine the intake and outlet openin s 28 and 27 are closed by thecurtains 29, te suction of the exhaust duct creating an inward motion ofthe atmosphere through these openings thus preventing the atomized paintfrom finding its wa into the room or area where the machine is eingoperated, the atomizing chamber withinthe tank above the liquid paintbeingl charged with the paint vapor, and the paint content of theatmosphere of this chamber being high and the atomizers projectingsprays directly onto the surface of the boards, etc. Howeveryfast thelatter are.

fed through the chamber they immediately laning machlne and.

become completely coated with paint.

ile this operation is'going on the\draft of exhaust duct 70, with ltsaccelerator 110, causes a gentle movement of the atmosphere of thechamber upwardly throu h the duct to the paint separator 80. In t is searator the current of paint laden air, as s own in Figure 5, comes firstin contact with the under sides of the inclined faces of the star shapeddeflecting surfaces by which the flow is efiected outwardly in al1directions and through the perforated plate 86 and is againv deflectedand turned back by the interior of the fiat sides of Abox and againpasses through the perforated plate 86 to be'a third time deflected bythe upper inclined faces of the star and finally by the inclined flange87 surrounding the outlet mouth of the box.

`-These deflectors of the paint laden air The tank is first chargedpreferably to' the depth indicated in Figure 5 and the nozcauses thepaint to be preclpitated on the various surfaces by which it isdeflected and through which it passes and it finds its way from thestar, both sides of the inclined plates of which shed the precipitatedpaint, from the perforated sides of the enclosure 86 and the interior-ofthe box 80 to the re? with relation to the coating of cards, etc.

with paint it is equally applicable to the treatment of any articleswith a substance without departing from the spirit of my invention.

What I claim is as follows:

1. In a portable tank for the treatment of articles with a substance,said tank having lan entrance in one wall and an exit in an oppositewall for permitting the passage of the articles in a straight line.through the box, means for atomizing the substance within' the chamber,said means consisting of a pluralityl of relatively fixed atomizers,

means for subjecting the articles to the atomized substance within thechamber andA means lfor exhausting the atmosphere from the chamber.

2. In a portable tank for the treatment of articles with a substance,the interior of the tank constituting an open chamber containlng thesubstance, means for. atomizing the su stance within the chamber, meansfor subjecting the articles to the atomized substance within thechamber, means for ex'- hausting the atmosphere from the chamber andmeans for ,reclaiming the paint from the atmosphere exhausted from thechamber.

3 In a portabletank for the treatment of artlcles with a substance, theinterior of the box constitutlmgl an open chamber containing thesubstance, means for atomizing. the substance within the chamber, meansfor subjecting the articles to the atomized substance within the chamberand means for deliecting dripping of the substance within the chamberfrom the articles.

.- and its air pipe projecting t entrance and exit openings inoppositely dis- `posed walls, and means for feeding the articlesto betreated through the openings. '5. Inl-an apparatus of the type describedl a receptacle for 'containing a liquid substance for the treatment ofarticles, means for atomizing the substance within theyreceptacle, meansfor exhausting the atmosphere from the receptacle,l means for reclaimingthe paint from the atmosphere exhausted from the receptacle consistingof a vertical exhaust duct having at its to a devicel for deilecting theair current owing ffrom the ,duct, and means for collecting thesubstance precipitated by thedeflection of the air currents.

6. In a chamber for the treatment ofarticles with a substance, means foratomizing the substance within the chamber, means for subjectingy thearticles to the atomized substance within the chamber, means forexhausting the atmosphere from the chamber and means for reclaiming thepaint from the atmosphere exhausted from the chamber `consisting of avertical exhaust duct havingat its top a device for deiecting the aircurrent flowing from the duct and .means for .reclaiming the substanceprecipitated by the deflection of the air currents and returning it tothe chamber.

7. In a chamber for the .treatment of ar-y ticles with a substance, apressure fluid supply, means for atomizing the substance withwhichconstitutes a unita in the chamber, said means being connected to thepressure fluid-supply and means for subjecting the articles tov the.atomized substance ,within the chamber -conm'sting of, means operativelyconnected tothe pressure fluid supply and actuated by the\pressure fluidfor mechanically feeding the articles through the chamber.

8. A portable machine for treating ar-l ticles consisting of a tank theinterior of chamber for containing in its lower portion a liquidtreatment substance, atomizing means located within the chamber, saidmeans consisting of a series of pi es with their lower ends dippingintothe iquid and having nozzles at their upper ends, a series of compressedair pipes with nozzles at their." ends, means for coupling the air andliquid no'zzlesllin pairs, means for positioning the air nozzlesrelatively to the liquid nozzles to form at .omizers, means for suporting the said atomizers relatively to t e articles to Vbe treated.

9. A portable machine-for treating articles i consisting of a tank forcontaining in its lower'portion a liquid treatment substance andpresenting a chamber in its upper portion, a series of pipes with theirlower ends dipping into the liquid, and having nozzles at vtheir upperends, a series of compressed air pipes with nozzles at their ends, meansfor coupling the air and liquid nozzles in pairs, means for ad Justablypositioning the air nozzles relatively to the liquid nozzles to formatomizers, and means for sup orting the said atomizers relatively to te.articles to be treated.

10. A portable machine for treating articles consisting of a tank forcontaining in its lower portion a liquid treatment substance andpresenting a chamber in its upper portion, a series of pipes with theirlower ends dippi ing nozzles at their upper en s, a series of ends,means for coupling the air and liquid nozzles in pairs, means forpositioning the air nozzles relatively to the liquid nozzles to formatomizers, means for adjustably supporting the said atomizers relativelyto the articles to be treated.

11. A portable machine for treating articles 'consisting of a tank forcontaining in its lower portion a liquid vtreatment substance andpresenting a chamber in its upper portion, a series of pipes with theirlower ends dipping into the liquid and having nozzles at their upperends, series of compressed .air pipes with nozzles at their ends, meansfor coupling the air and liquid nozzles in pairs, means for positioningthe air nozzles relatively to`the vliquid nozzles to form atomizers,means for supporting the said atomizers relatively to the articles to betreated and means for agitating the liquid substance.

12. A machine for treating articlescon'- sisting of a tank forcontaining in its lower portion a liquid treatment substance andpresenting a chamber in its upper portion, a series of ipes with theirlower ends dipping into t e liquid and having nozzles at their upperends, a series of compressed air pipes \with nozzles at their ends meansfor couplin the air and liquid nozzles in pairs, means or positioningthe air nozzles relatively to the liquid nozzles to form atomizers,means for sup orting the said atomizers relatively to t e articles to betreated, means for agitating the h uid substance consisting ofaperforated ollow device.

into'the li uid and havp compressed air pipes with'nozzles at their i li 13. A portable machine for treating articles consistin of a tank forcontaining 1n its lower portion a liquid treatment sub.- stance andpresenting a chamber 1n its u per portion a series of p1 s with theirlower ends dipping into the 1qu1d having nozzles at their upper ends,series of compressed air pipes with nozzles at their ends, meansforcoupling the a1r and hquld nozzles 'in pairs, meansfor positioningthe air nozzles relatively to the hquld nozzlesl I ping into t e liquidand having nozzles at their upper ends, a series of compressed air pipeswith nozzles at their ends, means for couplin the air and l1qu1d nozzles1n palrs, means or positioning the alr nozzles relatively to the liquidnozzles to form atomizers, means for supportin the said atomizersrelativel to the artic es to be treated, means for agltating the liquidsubstance, a perpendicular exhaust duct communlcatmg with the upper`portion of the chamber, means for accelerating the exhaust draft in .theduct, means for reclaiming the substance carried through the duct by theexhaust draft and means for returning the substance to the tank.

15. In a portable apparatus of the type described a liquid containingchamber having an exhaust duct, means for atomizing the liquid in theaccelerating the exhaust draft in the duct, the said accelerating meanslconsisting of a compressed air pipe extending upwardly into the ductfor projecting a jet or series of jets of compressed air.

16. In an apparatus of the type described, a tank, atomlzing means, aperpendicular ex aust duct communicating therewith,

through the duct by the exhaust draft, and means for returning thesubstance to the tank, said means consisting of a box containing aseparator communicating with the exhaust duct, a pipe effectingcommunication between the ottom of the box and the tank, and deflectingthe box.

17. In an apparatus of the type described a tank, atomizing means, aperpendicular exhaust duct communicating with the tank,

devices located within `chamber, and means for.

-through the duct by In ans for reclaiming the substance carried l meansfor accelerating the exhaust draft in the duct, means yfor reclaiming.the substance carried through the duct by the exhaus't draft and meansfor returning the substance to the tank consisting of a box containing aseparator mounted upon the top of and communicating with the exhaust ofthe chamber onto said articles, said last Y mentioned means consistingof a device secured to the underside of the roofA of the tank andpresenting surfaces inclinedydownwardly from the centre. of the chamberto points beyond the vertical peripheral planes of the articles.

19. In a machine of the type described, a tank adapted to contain aliquid atomizing means, an exhaust duct communicating with the interiorof the tank,means` for accelerating the exhaust draftin the duct, andmeans for lreclaiming the liquid carried through the duct by the exhaustdraft,

said last mentioned means consisting of a hollow receptacle having aninlet with which said exhaust duct communicates, said receptacle havingan exhaust opening and abalanced cover for normally closing saidopening, a separator located within said receptacle over said inlet andconsisting of a perforated enclosure and a series of inclined .bailiingdevices positioned within said enclosure and adapted to divide theincoming draft and direct same upwardly and outwardly and means forconducting the reclaimed liquid to the tank.

20. In a machine of the type described a tank adapted to contain aliquid atomiz- 1ng means, a vertically disposed exhaust ductcommunicating at its lower end with the interior of the tank at a pointabove the level of the liquid therein, means for accelerating theexhaust draft in the duct and means for reclaiming the liquid carriedthe exhaust draft, said ast mentioned means .consisting of a hollowmetal box of rectangular form mounted and having with, the to opening anclosing said opening, a se arator located a balanced cover for normally-upon the upper end of the exhaust duct within said box over said in etand consistz ing of a perforated rectangular enclosure.

and a series of bailiing devices positioned within said enclosure overthe mlet and formmg a member of inverted pyramidal jform with star shaed base, the apex .of in the center -of the.

the pyramid locat inlet o ening whereby the incoming draft is divi edand deflected upwardly and' outwardly through the perforated enclosurein the box and means for conducting the reclaimedliquid to the tank.

21. In a portable machine of the tye described a tank for containing aliqui substance, means for atomizing the substance within thetank,.means for feeding articles 'to be coated with the substancethrough said tank, pressure Huid actuating means for driving saidfeeding means, an a pressure fluid supply duct communicating with saidatomizing means and the 'pressure fluid actuated means. i l Y 22. Inamachine of the type described a tank adapted to contain a liquidsubstance, means for atomizing the substance within the tank, means forfeeding articles to be coated with the substance within thetank, saidmeans'cnsstin of a pair of parallel feed rollers, means or rotating therollers v,consisting of a pressure fluid driven motor operativelyconnected thereto, anda pressure fluid sup ly duct communicating withthe motor and with the atomizingmeana 23. In amachine of thetypedescribed .t

an-exhaust duet, a receptacle having an inlet o ening communicating withthe exhaust uct, a baie extending across the said inlet and causingthe-exhaust i'low to spread laterally into contact with the adjacentwalls of the receptacle, and perforated division walls surrounding thebaie and intersecting the path of the exhaust flow after it is spread.

24. In a portable machine of the type described a tank mounted upon atruck in the form of a four-wheeled buggy said tank consisting of awooden'box-like structure of rectangular form the interior of whichconstitutes a chamber adapted to containa fluid substance,4 the frontand rearwalls having openmgs therein one ofsaid openings being yfor thepurpose of inserting: the article to be trea ted'and the other forAwithdrawing the article after being treated, ilexible means for closingthe openings, atomizing means located within said chamber, and aplatform mounted upon the buggy adjacent the inserting opening andadapted to receive and guide the articles about to pass through thetank.

In testimony whereof I have signed my name to this specification.4

l i LEVANDER BROWN, JR.

